Specifications

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-J1 REV.0 MAR.2001
CHAPTER 2 OPERATIONS AND TIMING
2-37
2.5.2 Controlling the Belt Motor (M2)
The following is a control diagram of the belt motor (M2). The belt motor is a 4-phase
stepping motor, and the circuit is used for the following:
• Turning on/off the motor.
• Controlling the rotation direction of the motor.
• Controlling the rotation speed of the motor.
F02-205-02
The CPU (Q1) on the ADF controller PCB sends the motor control signal to the belt mo-
tor driver PCB. The reversal motor driver PCB serves to control the motor according to the
input signal.
Q1
CPU
Q601
+24R
+24R
A
A*
B
B*
M2
+5R
REF-CLK
MO1
MO2
CW/CCW
B-Vref
J72
J71
J7
PI 1
J12
BTCLK
13
12
11
10
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
3
3
1
4
5
2
6
ADF controller PCB
Belt motor driver PCB